An overture is a musical introduction that typically precedes an opera, ballet, or concert. It serves to set the mood and introduce themes that will be explored in the performance. Overtures can vary in length and style, often incorporating melodies from the main work to engage the audience. In classical music, overtures are commonly associated with composers like Wolfgang Amadeus Mozart and Giuseppe Verdi. They can be standalone pieces, as seen in concert settings, or serve as a bridge to the main performance. Overtures play a crucial role in establishing the atmosphere and preparing the audience for the unfolding story.